Propeller.



No. 896,833. PATENTED AUG. 25, 1908. W. S..HULL.

PROPELLER.

AEPLIOATION FILED OOT. 15,1907.

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[NVENTOR flZZ/wzlfiad PATENTED AUG. 25, 1908.

W. S. HULL. PROPELLER.

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WILLIAM S. HULL, OF JACKSON, MISSISSIPPI.

rRoPEL'LER.

Specification of Letters Patent.

Patented Aug. 25, 1908.

Application filed October 15, 1907. Serial No. 397,536.

' To all whom tt may concern:

Be it known that I, WILLIAM S. HULL, citizen of the United States, residing at Jackson, county of Hinds, and State of MlSSlSSl)I)1, have invented certain new and useful. inprovements in Propellers, of which the folowing is a Specification, reference being had therein to the accompanying drawing.

This invention relates to a propeller, and particularly to a form having blades at the periphery thereof.

The invcn tion has for an obj act to provide a novel form of propeller comprising a body portion composed of cones with their bases n contact and having a series of blades disposed at the line of said bases and deflected laterally from a radial line extending outward from the base of said cones.

A further object of the invention is to utilize the gyrostatic action of the body of the propeller in balancing a frame or platform by disposingsuch propellers at opposite sides thereof and revolving them toward each other.

Another object of the invention is to provide a plurality of the propellers upon each driving shaft, the successive propellers being of decreasing diameter and having blades disposed upon their periphery whereby both the gyrostatic balancing and the propulsion are secured. I

Other and further objects and advantages of the invention will be hereinafter fully set forth and the novel features defined by the appended claims.

In the drawings :Figure 1 shows one aplication of my invention; Fig. 2 is an enarged elevation of the propellers arranged in a frame; Fig. 3 is a'section on line 3'3,.

Fig. 2 Fig. 4 is a detail perspective of one of the blades.

Like numerals refer to like several figures of the drawing.

In the form of propeller here shown, the body thereof is coniform and comprises opposite cones 10 with their bases in contact on a radial line 11 extending at a right angle to the driving shaft 12 of the propeller which passes through the apices 13 of the cones. The ropeller blades 14 are disposed on the radial line 11 at the bases of the cones and deflected laterally and diagonally therefrom toward the-outer face of the cone so as to form a con- "tinuous series'of peripherally disposed blades parts in the tapered outwardly to present an lnclined face in the forwardgdriving action of the propeller.

These propellers may be formed in any desiredmanner, for instance, of sheet material as shown in Fig. 4, the blade 14 being formed from the edge of one sheet, while the opposite sheet is provided with a bracing flange 15 at the base thereof properly disposed to deflect the blade and having a lip 16 secured to the base of the blade in order tostiil'en and brace it. These propellers are capable of application for various forms of propulsion, and are shown in Fig. 2- as having their shaft 12 mounted in the frame 17 and driven from the shaft 18 which is shown as provided with a friction gear 19 in contact with a friction pinion 20 on the shaft 12.

When a pluralit of propellers are used on a single driving s aft their efliciency'is in- .creased by successively reducing the size.

thereof so that the action of the blades upon one does not affect the remaining propellers j in a direct line therewith.

When the ropellers are mounted at opposite sides of t 1e frame, as shown in Fig. 2 the bodies thereof when revolving at a high speed produce a gyrostatic balancing and comprise a circular rotating plane forming a gyrostat with propelling blades at its periphery. This balancing and propulsion may be very advantageously utilized for aerial navigation, and a means for mounting the propellers for that purpose is shown in Fig. 1 where the main frame 21 may be composed of any desired light material, and the shafts 12 carrying the cones 10 and blades 14 mounted thereon in vertical planes and at opposite sides thereof. They may be geared in any desired manner to revolve toward each other and at an equal speed, for instance, by means of the gas engines shown at 22 which are connected to the driving shaft 23 having a friction disk 24 secured to the end thereof and being in contactwith the cone 25 on one of the driving shafts 12. This shaft issupplied with the pulley 26 over which belt 27 extends to a similar pulley 28 u on the parallel shaft at the same side of the 'rame. The opposite end of the shaft 23 is also provided with a friction disk 29 in contact with the cone 30 carried by the driving shaft 12 at that end of the frame. This shaft has thereon pulley 31 over which belt 32 extends to pulley 33 on the arallel shaft 12. If it,be desired to-util ize t e propeller in a horizontal plane it may be accomplished by means of the arrangement shown at the right of Fig. 1 where the shaft 34'is disposed in a bearing 35 and carrelation to the propeller.

ries a friction wheel 36 adapted to bear u on the periphery 37 of the driving disk 29. he frame may be formed of. any desired material or configuration, posed thereon adjacent to a these parts only being generally lustrated in In the operation of the invention, the pro peller is ada ted for rapid and economical propulsion 0 all kinds of conveyances and to act either upon air or water. The construc: tion thereof embodying a coniform bod having the radially disposed blades is such as to produce the maximum driving capacity when revolving at a high speed, and also a form in which the conical surfaces direct the air to. the blades, and owing to their small surface the entire area travels at practically a a uniform speed with the pressure substantially the same throughout. A very high speed can thus be secured without excessive strain or resistance on the shaft. The friction of.

the air passing over the surface of the disk or cone is greatly reduced, and the propeller may be conveniently formed from'plates of .sheet material riveted together and the against the rear. t will also be observed that the rapid rotation of the propellers in opposite 'dlrections produces a gyrostatic force which main mm and balances the frame or platform on which they are mounted thus reventing displacement thereof during the riving action. The small propelling blades upon the body produce the maximum force for a given area, power and speed of rotation, and the invention therefore comprises a gyrostatic propeller.

and the seat 38 maybe displatform 39 1 a series is used it is desirable that the Having described 'my invention and set forth its merits, secure by Letters Patent is 1. A pro of opposite y dis osed cones with their'bases in contact, and blades at the bases of said cones and deflected laterally therefrom at one sideand extended radially to said bases and diagonally to the radial line thereof.

2. A profieller having a body composed of oppositely isposed cones of sheet metal, the

what I claim and desire to I eller. comprising a body formed base of one cone being extended and deflected as a blade, and the base of the opposite cone extended to reinforce said blade.

. 3. A propeller having a body formed of cones with their bases in contact, and blades inclined laterally to a radial line from the base of said cones, one edge of said blade being tapered from its base outwardly.

4. A ropeller having a body formed of cones with their disposed at said base and inclined. laterally to a radial line extending therefrom, the area of said blade decreasing from its base to its free end. 5. In a propeller, a driving shaft, a ity of coniform bodies having per-i erally disposed blades, said bodies being ofisuccessively less diameter. i

6. In an air ship, a frame having on op 0- site portions a plurality of horizontally isposed gyrostatic bodies of successively less diameter and each provided with propeller blades at their perip cries, and means for re volving said blades in opposite directionsr 7. In an air ship, driving shafts at opposite portions thereof horizontally bodies mounted on said shafts and provided with small. propeller blades secured at the.

bases iii contact, a blade lural- I a frame provided with disposed, coniform gyrostaticperiphery thereof, and means for revolving WILLIAM s. rom.

Witnesses: C. A; THOMSON, J .0. H001). 

